CN1300488C - Leather belt tension device - Google Patents

Leather belt tension device Download PDF

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Publication number
CN1300488C
CN1300488C CNB031255825A CN03125582A CN1300488C CN 1300488 C CN1300488 C CN 1300488C CN B031255825 A CNB031255825 A CN B031255825A CN 03125582 A CN03125582 A CN 03125582A CN 1300488 C CN1300488 C CN 1300488C
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CN
China
Prior art keywords
belt
spring
tension part
axle sleeve
bearing
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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CNB031255825A
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Chinese (zh)
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CN1495375A (en
Inventor
霍斯特·舍恩迈耶
迈克尔·费希尔
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LIETEN AUTOMOBILE GmbH
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LIETEN AUTOMOBILE GmbH
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Publication of CN1495375A publication Critical patent/CN1495375A/en
Application granted granted Critical
Publication of CN1300488C publication Critical patent/CN1300488C/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • F16H7/10—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley
    • F16H7/12—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley
    • F16H7/1209—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley with vibration damping means
    • F16H7/1218—Means for varying tension of belts, ropes, or chains by adjusting the axis of a pulley of an idle pulley with vibration damping means of the dry friction type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H7/00—Gearings for conveying rotary motion by endless flexible members
    • F16H7/08—Means for varying tension of belts, ropes, or chains
    • F16H2007/0802—Actuators for final output members
    • F16H2007/081—Torsion springs

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

Belt tensioner has a tensioning section (5) attached to a spring-loaded belt support (10, 19) by a radial bearing (14). The tensioning section is biased axially by a second spring (20) which counteracts the force exerted on it by the belt.

Description

Belt tightener
Technical field
The present invention relates to a kind of belt tightener that has a tension part, its tension part contacts with belt by a belt bearing that is used to apply tension force, and to be connected with a radial sliding bearing with mode that this belt bearing separates, and can be around its spin axis revolution, wherein this belt bearing is tensioned under the loading of torsion spring and does rotation motion.
Background technique
This class belt tightener is for example open by German patent application prospectus DE-A-43 27 141 or DE-A-40 10 928.This belt tightener for example is used to the v belt on the tensioning automobile, and comprises a tension part that has a tension arm, and this tension arm at one end is provided with an Idle wheel that abuts on the belt, and links to each other with a radial sliding bearing at its other end.This radial sliding bearing comprises a sleeve part and a journal element, and wherein one of these two parts fix with tension arm, and another is maintained fixed motionless.The torsion spring of a whorl form of springs is enclosed within around axle sleeve and the axle journal coaxially, and an end links to each other with tension part, and the other end is maintained fixed.Known belt tightener is mounted to a kind of like this state: axle sleeve and axle journal twist under the prestressing force of torsion spring mutually, thereby belt are applied a predetermined active force by Idle wheel.The spring force of pre-tensioning torsion spring remains under the predetermined tension force belt, but Idle wheel can be offset or servo-actuated in the spring mode, and the length of belt should change thereupon.
But, under the restriction of structure type, the tension arm of back(-)up belt Idle wheel must be installed on axle sleeve or the axle journal prejudicially with respect to the axial length of radial sliding bearing.But can make radial sliding bearing be subjected to the effect of tilting force like this, thereby cause wearing and tearing bigger.In German patent application prospectus DE-A-43 27 141, attempted spin axis axially on the tie point of main spring is arranged on from radial sliding bearing position so far away so that import the mid point that roughly remains on the radial sliding bearing axial length with joint efforts of the active force of radial sliding bearing.But but this only has under enough utilization structure space situations just possible at those.
Summary of the invention
The technical problem to be solved in the present invention is to improve the belt tightener of the above-mentioned type, makes it reduce wearing and tearing simultaneously under compact and highly low structural condition.
According to the present invention, above-mentioned technical problem is to solve like this: in this specification begins this class belt tightener that part mentions, allow this tension part bear the loading effect of another spring, this another spring applies an active force that substantially parallels with spin axis to this tension part, and this active force counteracting is applied to active force on this tension part by belt.It is possible in compact structure this another spring being installed, thereby needn't increase required structure space.
Although known belt tightener with more than spring, disclosed belt tightener in German patent application prospectus DE-A-26 08 277 for example, wherein these springs have a kind of deflection.So, in this known belt tightener, used one and determined to make tension part to begin first pressure spring of rotating lowest threshold facing to tension part pushing and its spring force the friction plate.In addition, this belt tightener also has second pressure spring that is designed to shock strut and Idle wheel is directly pushed facing to belt.
It is for example open in the belt tightener of German patent application prospectus DE-A-195 24 403 to be basically parallel to the use that spin axis affacts the spring on the tension part.But this spring uses as unique spring there, and has replaced torsion spring of the prior art on its function; That is to say that tension force is to determine by the prestressing force of disc spring.
Although can support tension arm with this another spring, preferred radial sliding bearing has an axle sleeve and an axle journal, and this axle sleeve and axle journal can overcome active force axially the relatively moving each other along spin axis of another spring.Wherein, further preferably when having axle sleeve, tension part this axle sleeve is worked by another spring.
Verified, can adopt with the disc spring of the coaxial setting of spin axis as another spring that plays above-mentioned effect.Preferred this disc spring acts on the axle sleeve by a packing ring, thereby forms an axial plain bearing between packing ring and axle sleeve.Especially the active force that preferred this another spring applies is born by a bearing that comprises axial plain bearing.
Particularly advantageously, by this another spring to one be used for to this tension part around spin axis play the damping device imposed load of damping function do rotation motion.Like this, just can where necessary an additional damping function power be applied on the tension part, perhaps that damping is required damping function power is distributed between damping that is produced by torsion spring and the damping by another spring generation.Therefore, although running torque is for example existed total damping value up to 85%, still guaranteed not have the realization of wearing and tearing functions.
A kind of favourable match materials as this additional shock-damping structure is: vibration damping sheet is that 5% polyamide is made by glass fiber reinforced plastic, especially content of glass fiber, and the locked spacer that abuts on the vibration damping sheet is made by steel, especially stainless steel.
Following parts preferably are installed in order: a retainer, a disc spring, an axle sleeve that links to each other with tension part and another retainer on the axle journal of its radial sliding bearing in belt tightener of the present invention.In belt tightener of the present invention, also following parts can be installed in order on the axle journal of its radial sliding bearing preferably: a retainer, a disc spring, an axle sleeve that links to each other with tension part, a vibration damping sheet and another retainer.
Description of drawings
To be elaborated to embodiments of the present invention by accompanying drawing below:
Figure cuts open in the office that Fig. 1 shows first kind of mode of execution of belt tightener of the present invention;
Figure cuts open in the office that Fig. 2 shows second kind of mode of execution of belt tightener of the present invention.
Embodiment
Fig. 1 cuts open in office to there is shown belt tightener of the present invention be how to be used for belt in the tensioning automobile.But belt tightener 1 also is applicable to other application target that those need tightening belt, chain or other continuous transfer parts occasion.
Belt tightener 1 comprises a base member 2, and this base member 2 is provided with a middle opening 3, and has the shell of a formation ware shape part, that increase wall 4.In addition, belt tightener 1 has a tension part 5, and the ware shape sidewall 7 that this tension part has a middle opening 6 equally and increases wherein designs wall 4 and 7 like this, make them become the external boundary of belt tightener 1, and opening 3 become a public center line 8 with 6 central lines.
In addition, tension part 5 is provided with a tension arm 9, and this arm is with axially asymmetric and be fixed on the tension part 5 at intervals with center line 8 and protrude on the wall 7.Being equipped with one in tension arm 9 can be around the Idle wheel 10 of axis 11 rotations that only schematically illustrate.Idle wheel 10 constitutes this and wants the belt bearing of the belt of tensioning, and its medial axis 11 is parallel to center line 8.
In the opening 3 of base member 2, be fixed with the end of a tubular journal 12, preferably finish by compacting.A unshowned screw can guide and pass this tubular journal 12, belt tightener 1 can be fixedly mounted on the engine components or like of automobile by this screw.
The tension part 5 that has an axle sleeve 13 is positioned on this tubular journal 12, its Intermediate shaft sleeve 13 and axle journal 12 can relatively move vertically, and the internal surface of axle sleeve 13 forms a radial sliding bearing 14 with the outer surface of axle journal 12, thereby tension part 5 can be around axle journal 12 rotations, and center line 8 becomes spin axis there.Tension part 5 remains on the axle journal 12 by the retainer 15 of a shim form, and this pad is sealed with shape to be connected with the free end of the axle journal 12 that faces toward base member 2 with the mode of force closure.
In addition, tension part 5 has a friction cone 16, and this friction cone 16 extends coaxially with center line 8, and a spring bushing 17 and an annular cover 18, the torsion spring 19 of a helical spring form of they supportings are installed on this friction cone usually.As common in this class belt tightener, an end of torsion spring 19 is fixed on the base member 2, and the other end is fixed on the tension part 5, and the relative rotation by tension part 5 and base member 2 just can make the torsion spring tensioning like this.Function and the operation of carrying out tensioning by this annular spring are known in those skilled in the art, thereby needn't elaborate to it at this again.
By tightening belt, tension part 5 is applied a directed force F 1Since axle sleeve 13 spin axis 8 axially on spaced apart with Idle wheel 10, and owing to compare with disclosed that class belt tightener 1 of the prior art of German patent application prospectus DE-A-4327141, thus be used on friction cone 16 torsion springs 19 spin axis 8 axially on cause reaction force F 2The below immovable point than Idle wheel 10 more recently from axle sleeve 13, act on making a concerted effort on the sliding bearing 14 prejudicially thereby can produce one, and produce one thus and cause radial sliding bearing 14 wearing and tearing to become big turning torque.
For fear of this thing happens, axle sleeve 13 length in the axial direction of radial sliding bearing 14 wants in ratio open 3 peripheral regions intermediate gaps between the locked spacer 15 and base member 2 short.In the axial intermediate gaps that forms thus another spring that is designed to the ring discoid spring 20 is installed, it is positioned on the axle journal 12, and act on symmetrically spin axis 8 around.In the zone of this saucerspring, preferred base member 2 is provided with a bearing 21, and it plays pressing piece, thereby makes saucerspring bear uniform load.Saucerspring 20 acts on axle sleeve 13 by a packing ring 22, applies a directed force F thereby can be parallel to 8 pairs of axle sleeves 13 of spin axis 3, this active force and F 2Together as the power F of reaction force to transmitting by belt 1The generation effect so just produces a F that makes a concerted effort of the axial midpoint of relative radial sliding bearing 14 basically R, like this, do not produce turning torque basically.
In assembly process, directed force F 3Can utilize the spring travel of saucerspring 20 to regulate, its size is preferably between about 4000 to 7000 newton with changing.
Disc spring 20 acts on the distolateral of axle sleeve 13 by packing ring 22, and it is pushed towards the locked spacer 15 that plays the bearing effect.Under these circumstances, between locked spacer 15 and the axle sleeve 13 or between axle sleeve 13 and the packing ring 22 toward each other the side form axial plain bearing.These axial plain bearings preferably include the steel surface that scribbles PTFE (teflon).But, according to the type that applies, this sliding bearing also helps frictional damping, and the damping that applies so just is able to distribute in the damping that produces by spring 19 with between by fricative damping.
Sliding bearing also can be provided with by the pad that separates and/or be located on another axial position.
Fig. 2 shows second kind of mode of execution of belt tightener 30 in the mode similar to Fig. 1, and wherein identical with first kind of mode of execution member adopts identical reference character to represent, and no longer it is described at this.
Belt tightener 30 only is with the difference part of belt tightener 1: produce frictional damping additional, that strengthen by a special vibration damping sheet 31 is installed.Vibration damping sheet 31 is preferably placed between axle sleeve 13 and the locked spacer 15, and its Intermediate shaft sleeve 13 is to press vibration damping sheet 31 by packing ring 22 under the effect of disc spring 20 at another spring, and vibration damping sheet 31 is pressed to locked spacer 15.For those occasions that needs additional frictional damping by very high service condition requirement, adopt this structure particularly favourable.Under these circumstances, can make the frictional damping value reach 60% of tension force or running torque.Although running torque is existed total damping value up to 85%, can be by on the one hand by torsion spring 19, regulate damping by another spring 20 or by in two systems, distributing damping to guarantee not have the realization of wearing and tearing function on the other hand.
For making vibration damping sheet 31 and adjacent locked spacer 15 form a kind of favourable match materials, the PA (polyamide) 46 of for example can be with glass-fiber-reinforced polyamide, especially will contain 5% glass fiber component is used for vibration damping sheet 31, and stainless steel especially V2A is used for locked spacer 15.In this case, the sliding bearing between axle sleeve 13 and vibration damping sheet 31 or axle sleeve 13 and packing ring 22 can include as first kind of mode of execution and is positioned in steel slip surface on the not shown additional pad, coated with PTFE in case of necessity.
In the modification of the mode of execution of describing and illustrating, also can adopt other order to member.For example disc spring can be installed in axle sleeve on that side of locked spacer.Also can replace disc spring with the suitable spring of another kind.The selection of material can be carried out according to expected service life and/or desired damping value.In addition, when tension arm links to each other with axle journal, also can adopt the present invention.

Claims (9)

1. belt tightener (1 that has a tension part (5), 30), this tension part (5) contacts with belt by a belt bearing (10) that is used to apply tension force, and to be connected with a radial sliding bearing (14) with mode that this belt bearing (10) separates, and can turn round around its spin axis (8), wherein this belt bearing (10) is tensioned under the loading of torsion spring (19) and does rotation motion, described tension part (5) is subjected to the loading effect of another spring (20), it is characterized in that: described radial sliding bearing (14) is made of the internal surface of axle sleeve (13) and the outer surface of axle journal (12), described axle sleeve and axle journal can overcome active force axially the relatively moving each other along spin axis (8) of described another spring (20), wherein, described another spring (20) applies an active force (F who parallels with spin axis (8) substantially to described tension part (5) 3), this active force (F 3) offset by described belt and be applied to active force (F on the described tension part (5) 1) effect; Form (the F that makes a concerted effort of the central shaft that points to described radial sliding bearing (14) basically R), thereby near described radial sliding bearing (14), do not produce turning torque basically.
2. according to the described belt tightener of claim 1, it is characterized in that: described tension part (5) and described axle sleeve (13) assembling, described another spring (20) works to this axle sleeve (13).
3. according to claim 1 or 2 described belt tighteneres, it is characterized in that: described another spring (20) is a disc spring, and this spring is installed into spin axis (8) coaxial.
4. according to the described belt tightener of claim 3, it is characterized in that: between described disc spring (20) and described axle sleeve (13), a packing ring (22) is installed, between this packing ring (22) and this axle sleeve (13), forms an axial plain bearing.
5. according to each described belt tightener in the claim 1 to 2, it is characterized in that: the active force (F that described another spring (20) is applied 3) absorb by a bearing that holds an axial plain bearing and a supporting member (15).
6. according to each described belt tightener in the claim 1 to 2, it is characterized in that: by described another spring (20) to one be used for to described tension part (5) around spin axis (8) play the damping device imposed load of damping function do rotation motion.
7. according to the described belt tightener of claim 6, it is characterized in that: described damping device comprises that one is the locked spacer (15) that the vibration damping sheet (31) made of 5% polyamide and abut in that vibration damping sheet (31) is gone up and made by steel, especially stainless steel by glass fiber reinforced plastic, especially content of glass fiber.
8. according to each described belt tightener in the claim 1 to 2, it is characterized in that: described radial sliding bearing (14) comprises an axle journal (12), axially being equipped with in the following order of this axle journal (12) upper edge spin axis (8):
A retainer (21,15);
A disc spring (20);
An axle sleeve (13) that links to each other with described tension part (5);
An and retainer (15,21).
9. according to each described belt tightener in the claim 1 to 2, it is characterized in that: described radial sliding bearing (14) comprises an axle journal (12), axially being equipped with in the following order of this axle journal (12) upper edge spin axis (8):
A retainer (21,15);
A disc spring (20);
An axle sleeve (13) that links to each other with described tension part (5);
A vibration damping sheet (31);
An and retainer (15,21).
CNB031255825A 2002-09-10 2003-09-10 Leather belt tension device Expired - Lifetime CN1300488C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP02019891A EP1398539B1 (en) 2002-09-10 2002-09-10 Belt tensioner
EP02019891.7 2002-09-10

Publications (2)

Publication Number Publication Date
CN1495375A CN1495375A (en) 2004-05-12
CN1300488C true CN1300488C (en) 2007-02-14

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CNB031255825A Expired - Lifetime CN1300488C (en) 2002-09-10 2003-09-10 Leather belt tension device

Country Status (6)

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EP (1) EP1398539B1 (en)
CN (1) CN1300488C (en)
AT (1) ATE311556T1 (en)
BR (1) BR0303816B1 (en)
DE (2) DE50205124D1 (en)
ES (1) ES2254577T3 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1861635B1 (en) * 2005-03-21 2010-11-24 Litens Automotive Partnership Belt tensioner with wear compensation
CN100347466C (en) * 2005-03-22 2007-11-07 淮阴工学院 Automatic tension device for belt and driving wheel
DE102005059580A1 (en) * 2005-12-14 2007-06-21 Schaeffler Kg Chain or belt tightening unit, comprises at least one friction element coated with metal-polymer matrix
CA2644684C (en) 2006-03-22 2016-04-12 Litens Automotive Partnership Tensioner for flexible drives
DE102006017287B4 (en) 2006-04-12 2021-03-25 Litens Automotive Gmbh Tensioner for an endless drive
DE102006033417A1 (en) * 2006-07-19 2008-01-24 Schaeffler Kg Clamping device for a drive belt or a drive chain
BRPI0920802B1 (en) * 2008-10-02 2019-11-05 Litens Automotive Inc tensioner assembly
US8403785B2 (en) * 2008-11-05 2013-03-26 Dayco Ip Holdings, Llc Clutched damper for a belt tensioner
US9441677B2 (en) 2010-06-25 2016-09-13 Litens Automotive Partnership Overrunning decoupler
US8617013B2 (en) * 2010-09-02 2013-12-31 Dayco Ip Holdings, Llc Tensioner with expanding spring for radial frictional asymmetric damping
US9777806B2 (en) * 2012-03-28 2017-10-03 Dayco Ip Holdings, Llc Sealed belt tensioning device
EP2938905B1 (en) 2012-12-26 2018-10-17 Litens Automotive Partnership Orbital tensioner assembly
CN106662219B (en) 2014-06-26 2019-04-19 利滕斯汽车合伙公司 Track tensioner assembly
DE102015222238B4 (en) * 2015-11-11 2020-11-12 Schaeffler Technologies AG & Co. KG Noise-dampened self-aligning bearings for decoupling belt tensioning units
DE112018004645T5 (en) 2017-09-07 2020-08-20 Litens Automotive Partnership ROTATIONAL TRAILER DECOUPLER WITH SINGLE SPRING
CN114151520B (en) * 2021-10-11 2024-03-08 贵州吉利发动机有限公司 Tensioner, engine and vehicle

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5312302A (en) * 1992-04-23 1994-05-17 Nsk Ltd. Auto-tensioner
JPH0712188A (en) * 1993-04-30 1995-01-17 Koyo Seiko Co Ltd Automatic tensioner
FR2717546A1 (en) * 1994-03-18 1995-09-22 Unitta Cy Belt tensioner.
JP2001141006A (en) * 1999-11-17 2001-05-25 Koyo Seiko Co Ltd Autotensioner
JP2002089634A (en) * 2000-09-18 2002-03-27 Koyo Seiko Co Ltd Automatic tensioner

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2608277A1 (en) 1976-02-28 1977-09-01 Porsche Ag Tensioner for belts and chains - has tensioning roller controlled by friction discs with support arm and shaft sleeve
DE4010928C2 (en) 1990-04-04 1998-11-05 Litens Automotive Gmbh Automatic belt tensioner
DE4327141A1 (en) 1993-08-12 1995-02-16 Litens Automotive Gmbh Automatic belt tensioner
DE19524403C2 (en) 1995-07-04 2000-09-28 Litens Automotive Gmbh Bearing for a belt tension arm
DE69734566T2 (en) * 1997-01-31 2006-06-08 Koyo Seiko Co., Ltd. Automatic clamping device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5312302A (en) * 1992-04-23 1994-05-17 Nsk Ltd. Auto-tensioner
JPH0712188A (en) * 1993-04-30 1995-01-17 Koyo Seiko Co Ltd Automatic tensioner
FR2717546A1 (en) * 1994-03-18 1995-09-22 Unitta Cy Belt tensioner.
JP2001141006A (en) * 1999-11-17 2001-05-25 Koyo Seiko Co Ltd Autotensioner
JP2002089634A (en) * 2000-09-18 2002-03-27 Koyo Seiko Co Ltd Automatic tensioner

Also Published As

Publication number Publication date
ES2254577T3 (en) 2006-06-16
EP1398539A1 (en) 2004-03-17
ATE311556T1 (en) 2005-12-15
BR0303816B1 (en) 2014-05-20
BR0303816A (en) 2004-09-08
EP1398539B1 (en) 2005-11-30
DE50205124D1 (en) 2006-01-05
DE20220807U1 (en) 2004-04-01
CN1495375A (en) 2004-05-12

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